The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 12, 2023
Filed:
Apr. 15, 2021
Cmd Corporation, Appleton, WI (US);
Paul A. Selle, Appleton, WI (US);
Kenneth C. Radtke, Appleton, WI (US);
Charles H. Sauder, Appleton, WI (US);
Paul A. Johnson, Menasha, WI (US);
Christopher L. White, Watersmeet, MI (US);
Arvid R. Johnson, Appleton, WI (US);
Gregory T. Prellwitz, Black Creek, WI (US);
Michael J. Stickney, Appleton, WI (US);
Thomas C. Jansen, Appleton, WI (US);
Christopher A. Saucier, Yarmouth, MA (US);
Terry L. Leitzke, Hortonville, WI (US);
Bradley J. Schmoll, Appleton, WI (US);
CMD Corporation, Appleton, WI (US);
Abstract
A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a first sealing zone, and an adjacent weakening zone. The weakening zone may be a heated perforator, includes a heating wire, or be disposed to create an auxiliary sealed area. The heating wire can have connected thereto, a source of power that is an adjustable voltage or magnitude, and/or pulsed, and/or a feedback loop. The heating wire ay be an NiCr wire and make intermittent contact with the web and be disposed in an insert. The weakening zone may create a line of weakness that is uniform or varies in intensity, is a separating zone, or includes a heat film, a toothed blade, a row of pins, a source of air, or a source of vacuum. The sealing zones ma include temperature zones, cartridge heaters, cooling air, or hated air, or a source of ultrasonic, microwave or radiative energy.